Measurements of visibility, precipitation type and intensity, and the corresponding the World Meteorological Organization (WMO) weather codes.

The dataset provides rare high quality meteorological observations from sea-ice regions of the Arctic Ocean. They enable analysis of meteorological conditions and provide context for other measurements and analysis associated with the expedition.

The measurements are from the present weather sensor operating on Icebreaker Oden’s 7th deck at 25 m above sea level during the Arctic Ocean 2018 (AO2018, also referred to as MOCCHA-ACAS-ICE) expedition to the central Arctic Ocean in August and September 2018.

Comments

Visibility, up to a maximum range of 20km, air temperature and precipitation type and intensity determined by the Vaisala PWD22 present weather sensor installed above Oden’s bridge on the 7th deck, at a height of 27m above sea level. The system was operated as part of the Stockholm University ACAS project. The system additionally reports instantaneous, 15-minute and 60-minute WMO present weather codes.

Until 2018-08-13 20:10, the sensor was set to only report visibility. After this date, the full set of measurements were reported.

Data from the system are combined into a cruise-length file. The data are time-averaged to both 1-minute and 30-minute intervals, to correspond with the micrometeorological averaging periods used for the mast sensors.

Images

Image caption

The present weather sensor in position 5 m to starboard of centreline on Oden’s 7th deck.

Contact information

Email address

[javascript protected email address]

Phone number

+46 8 16 4373

Postal address

John Prytherch
Department of Meteorology (MISU)Stockholm University
SE-106 91 StockholmSweden

Metadata

GCMD science keywords

Earth science > Atmosphere

GCMD location

Ocean > Arctic Ocean

Status

Completed

Dataset language

English

Project

Arctic Ocean 2018. These data are part of the Arctic Climate Across Scales (ACAS) project, funded by the Knut and Alice Wallenberg Foundation. Project PI Michael Tjernström (MISU).